Regarding the Hindman's brigade/Shaver's brigade confusion, I asked the same exact question myself on another Civil War forum and the answer was also said to be found in Larry Daniel's book Shiloh: The Battle that Changed the Civil War. Soon I got a copy of that book and on page 149 according to Larry Daniel what happened was this: "Sometime before the battle, Hardee awkwardly formed a provisional Division ... Hindman's command comprised the brigades S.A.M. Wood and Hindman's own, now under Colonel R.G. Shaver"

Naturally this brings up the question of what happened to Hardee's other two brigades, those of Pat Cleburne and Adley Gladden, the latter attached to Hardee's corps for the battle. Did they also get mushed together into a provisional division? Or did they remain independent? The answer is that they remained independent, they were not also formed into a provisional ad hoc division. So ultimately on the morning of 6 April (and probably a few days before) Hardee's corps looked like this:
**Hindman's division consisting of
*S.A.M. Wood's brigade and
*Shaver's (Hindman's old brigade)
*Pat Cleburne's brigade
*Adley Gladden's brigade (attached just before for the battle)

It's discussed further in the thread where I asked the question here:

http://civilwartalk.com/threads/hindmans-brigade-shavers-brigade-what.125895/#post-1362221